> You can't wear-level against blocks that are in use, only blocks that are free.
It only takes a bit of arithmetic to prove that this cannot possibly be true, or else all of those 95%-full drives would have long since failed, and QLC SSDs would have been a disaster and never would have been adopted by system OEMs that provide multi-year warranties. (And if it were true, then SSDs prior to TRIM wouldn't have been viable.)
You can include static data in wear leveling, and all SSDs do. It does lead to some write amplification, but that's already factored in to a drive's endurance specs.
It only takes a bit of arithmetic to prove that this cannot possibly be true, or else all of those 95%-full drives would have long since failed, and QLC SSDs would have been a disaster and never would have been adopted by system OEMs that provide multi-year warranties. (And if it were true, then SSDs prior to TRIM wouldn't have been viable.)
You can include static data in wear leveling, and all SSDs do. It does lead to some write amplification, but that's already factored in to a drive's endurance specs.